SU1285588A1 - Sensory device - Google Patents

Abstract

The invention relates to a pulse technique. The goal is to increase the sensitivity of the device. It is achieved by being in a sensory device. containing a glowing thyratron (T) 1, resistors 2.8, a capacitor (K) 6, a phase bus 7, a diode 9 and a zero bus 11, a touch pad 3 consisting of plates and a K 10 was inserted. , allowing to eliminate the influence of the spread of the values of the operator's own capacity (O) on the reliability of the touch triggering of the T 1 glow discharge. Due to this, at small values of the equivalent capacitance O, the anode voltage of the sensory switch-on does not increase. The invention can be used in input and output devices. 1 il. with

Description

Phase 7

ten

The invention relates to a pulse technique and can be used in input devices and for extracting information.

The purpose of the invention is to increase the sensitivity of the device by connecting the operator to a separate touch pad 3, consisting of the first 4 and second 5 plates, the first capacitor 6 connected to the glow bar 7 and the anode of the thyratron 1, the second resistor 8 connected to an anode of rectifying iodine 9, the cathode of which is connected to the second capacitor 10 and the other zero.

The device works as follows.

When the operator closes the first 4 and second 5 plates of the split touch pad 3 with the finger, the operator’s own capacitance relative to the zero bus 11 is inserted into the device and through the resistance R of the skin of the finger and the second capacitor 10 the glow discharge tiratron grid 1 connects to the zero bus I. therefore, the capacity of human C is added

10 C.

plain taper

emog chiva

fO

J5

20

25

thirty

the capacitance of the second capacitor .v V-, Q. An alternating current circuit is formed: a phase bus 7 — the input capacitance of tyraton 1 (gap capacity anode-grid) —a parallelly connected human capacitance C and the capacitance of the second capacitor C, Q-zero bus P. On-35 ode drawn on the grid of tiratron I the variable voltage Ug is determined by the expression

Sen

g

B

where UQ, is the phase voltage of the source

alternating voltage power supply .;

the input capacitance of the thyratron taking into account the parasitic capacitances)

.,,YU

 H

SehS „

place with zero run nost on 1 st capacitive sense

Fo

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what, but the carved cond bit

5th diode menn

schemes St. „Wed, + С

1O

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Under the action of the preparatory discharge induced on the grid voltage between the electrodes, a pulsating C flows; the frequency of the source of alternating power supply voltage ensures the occurrence of the main discharge between the cathode and the anode.

High sensitivity of the proposed sensor device is provided when inequality is fulfilled.

fO

five

0

five

0

5 ode, Yu

With „Wed-s.

Thus, the connection of the second plate 5 of the split touch pad 3 through the second capacitor 10 with a zero (grounded) bus 11 eliminates the influence of the spread of the operator’s own capacity on the reliability of the touch triggering of the glow discharge of the thyratron 1 and, with a smaller value of equivalent capacitance the operator, the anode voltage of the touch switch is not increased.

Claims (1)

Invention Formula A sensor device containing a glow discharge thyratron, the anode of which is connected to the phase bus of the alternating voltage supply source and through the first capacitor to the rectifier diode anode, the glow discharge thyratron grid is connected to the first output of the first resistor, and the cathode is connected to the second resistor the anode of the rectifying diode is that, in order to increase the sensitivity of the device, a touch pad and a second capacitor are inserted into it, with the first plate of the split touch sensor oschadki connected to the second terminal of the first resistor, a second touch pad slotted plate through a second capacitor connected to the cathode of rectifying unit 5 diode and zero bus source of alternating voltage power supply.